HygroFlex transmitters are the perfect instruments for constant monitoring of temperature and humidity in building management systems, cleanrooms, data centers, museums, storage rooms and and many other industrial applications. The transmitters are available in duct, wall, and com- pact space versions and, together with the optional HW4 software package and a Rotronic data cable, can be configured exactly as required. Customer needs and the application determine the model: for example, the HygroFlex5 has an interchangeable probe that can be changed in a matter of seconds, while the HygroFlex1 series is ideal for cost-sensitive HVAC applications.